Mobile communication device

Abstract

A mobile communication device includes a first plate, and a second plate provided with guide rails on respective edges thereof and slidably coupled to the first plate. A main body is coupled to the first plate and a sub body is coupled to the second plate. Torsion springs are provided on the first plate, adjacent to respective edges of the first plate. Contact members are respectively provided at one end of each torsion spring and each contact member contacts a corresponding guide rail due to elasticity of the torsion spring. Guide slits are disposed in the first plate, adjacent to respective edges of the first plate. Each guide slit receives a corresponding contact member.

What is claimed is: 
     
       1. A mobile communication device, comprising:
 a first plate; 
 a second plate provided with guide rails on respective edges of the second plate and slidably coupled to the first plate; 
 a main body coupled to the first plate; 
 a sub body coupled to the second plate; 
 a torsion spring provided on the first plate; 
 contact members respectively disposed at one end of each torsion spring and contacting a corresponding guide rail due to elasticity of the torsion spring; and 
 guide slits disposed in the first plate, adjacent to respective edges of the first plate, each guide slit to receive a corresponding contact member, 
 wherein the guide slits overlap the second plate in response to the first plate being in a first position, and 
 wherein the guide slits do not overlap the second plate in response to the first plate being in a second position, the second position being different than the first position. 
 
     
     
       2. The mobile communication device of  claim 1 , wherein the torsion spring comprises torsion springs, which are adjacent to the respective edges of the first plate. 
     
     
       3. The mobile communication device of  claim 2 , wherein each contact member comprises:
 a cylindrical body contacting the guide rail, and 
 a cylindrical shaft that extends from a central portion of the cylindrical body and is inserted into the guide slit. 
 
     
     
       4. The mobile communication device of  claim 2 , wherein each contact member comprises:
 a cylindrical body contacting the guide rail, and 
 a cylindrical roller that extends from a central portion of the cylindrical body and is inserted into the guide slit. 
 
     
     
       5. The mobile communication device of  claim 2 , wherein each contact member comprises:
 a cylindrical body contacting the guide rail, and 
 a cylindrical shaft that has a wider diameter than the corresponding guide slit, extends from a central portion of the cylindrical body, and is inserted into the guide slit. 
 
     
     
       6. The mobile communication device of  claim 5 , wherein an in/out-hole is disposed at a rear of each guide slit to selectively introduce the cylindrical shaft into the guide slit. 
     
     
       7. The mobile communication device of  claim 1 ,
 wherein the torsion spring comprises a double-stepped torsion spring provided at the center of the first plate. 
 
     
     
       8. The mobile communication device of  claim 7 , wherein the torsion spring is riveted on the first plate, and the contact members are integrally formed with the torsion spring. 
     
     
       9. The mobile communication device of  claim 7 , wherein each contact member comprises:
 a cylindrical body contacting the guide rail, and 
 a cylindrical shaft extending from a center of the cylindrical body and inserted into the guide slit. 
 
     
     
       10. The mobile communication device of  claim 1 ,
 wherein the torsion spring comprises a torsion spring disposed at a center of the first plate. 
 
     
     
       11. The mobile communication device of  claim 10 , wherein a center of the torsion spring is riveted on the first plate, and the contact members are formed integrally with the torsion spring. 
     
     
       12. The mobile communication device of  claim 10 , wherein each contact member comprises:
 a cylindrical body contacting the guide rail, and 
 a cylindrical shaft extending from a central portion of the cylindrical body and inserted into the guide slit. 
 
     
     
       13. The mobile communication device of  claim 2 , wherein the torsion springs are riveted on the first plate, and each contact member is integrally formed with the corresponding torsion spring.